Inkbird AC 100-220V ITC-100VH Digital PID Thermostat Temperature Controller, DA 40A SSR, Black Heat Sink, K Thermocouple PID and ON/OFF Control Mode with high standard self-adjust function Multiple temperature sensors (K, S, Wre, T, E, J, B, N, CU50, PT100) Self-adjusting function and intelligent control of the instrument to ensure the long-term stability. Accuracy of displaying and controlling 0.1C Character: PV: 4 digital 9.9mm height Red LED Letters. SV: 4 digital 8mm height Green LED Letters